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1.cut a dash My dad cut a dash at my cousin's wedding last summer.He looked very elegant!

2.dressed to kill Emma was dressed to kill at the graduation party.We couldn't take our eyes off her!
3.not a hair out of place Sophia is always looking smart and groomed - not a hair out of place!
4.look like a million dollars You look like a million dollars in that dress.
5.dressed (up) to the nines
6.pretty as a picture
7.down-at-heel He's looking really down at heel...Is he going through a rough time?
8.look a sight Oh dear, what's wrong with you? You look (a bit of) a sight this morning!
9.(as) ugly as sin Have you seen the new neighbour's dog? It's as ugly as sin!
10.face only a mother could love The poor guy has a face only a mother could love.
11.face that would stop a clock You'll recognize him - he's tall and thin, with a face that would stop a clock!
12.mutton dressed as lamb The style doesn't suit her - it has a mutton-dressed-as-lamb effect on her!
13.thin on the top David’s gone a bit thin on the top in the last few years.
14.all skin and bone E.g.I can't believe how much weight she's lost...She's all skin and bone!
15.vertically challenged
16.Beauty is only skin deep